About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Advanced Magnetic Materials for Sensors, Power, and Multifunctional Applications
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Presentation Title |
Ordering and Its Effect on Magnetostrictive Behavior in Fe-Al Single Crystals |
Author(s) |
Travis Willhard, Andrew Laroche, Rahulkumar Sunil Singh, Sivaraman Guruswamy |
On-Site Speaker (Planned) |
Rahulkumar Sunil Singh |
Abstract Scope |
Fe-Al alloys are of interest as high strength, ductile and low cost magnetostrictive alloys. This work examines how the nature of short range ordering (SRO) changes with thermal history in Fe-16.4 at.% Al single crystal and how this influences magnetostriction. [200]-, [220]- and [111-oriented single crystals with three different thermal histories were prepared: (a) as-grown condition from the vertical Bridgman growth process, (b) annealed at 1373 K after crystal growth, and (c) high temperature annealing (HTA) followed by low temperature anneal at 573 K. XRD examination was used to characterize the phases present and SRO. As-grown crystal sample and low temperature annealed samples show SRO that predominantly has B2 like local arrangements and a very small number of DO3-like arrangements. HTA sample showed SRO with only B2 like local arrangements. HTA samples showed lower of magnetostriction values compared to as-grown samples contrary to expectation and a detailed examination is underway. |
Proceedings Inclusion? |
Planned: |